Common class array test {
Private int[][] array;
Public void matrix(int n){// generating matrix
array = new int[n][n]；
for(int I = 0； I & ltn；; i++){
for(int j = 0； j & ltn； j++){
//Find the first line
if(i==0){
//Find the value of odd digits, and the value of even digits is the left element plus 1.
if(j%2==0){
array[I][j]=(j+ 1)*(j+ 1)；
} Otherwise {
array[I][j]= array[I][j- 1]+ 1；
}
}
//Find the first column
else if(j==0){
if(i%2== 1){
array[I][j]=(I+ 1)*(I+ 1)；
} Otherwise {
array[I][j]= array[I- 1][j]+ 1；
}
} Otherwise {
If (i & gtj){
//Looking for patterns
//Even number is +j, the first element of this line.
//Odd bits are the first element of this line -j
if(i%2==0){
Array [I][j]= array [i] [0]+j;
} Otherwise {
array[I][j]= array[I][0]-j；
}
} Otherwise {
if(j%2==0){
array[I][j]= array[0][j]-I；
} Otherwise {
Array [I][j]= array [0] [j]+i;
}
}
}
}
}
for(int I = 0； I & ltn；; i++){
for(int j = 0； j & ltn； j++){
system . out . print(array[I][j]+" ")；
}
system . out . println()；
}
}
}
The output results are as follows:
1 2 9 10 25
4 3 8 1 1 24
5 6 7 12 23
16 15 14 13 22
17 18 19 20 2 1